iOS 7 Language Glitches

I have seen the following reports in the Apple Support Communities of problems with language support:

+Greek keyboard missing at some stage, so that users with Greek characters in their password can't get access to their devices. (Fixed with update 7.02?)

+Broken display of Arabic and Korean in some apps.

+New 10-key (T9) Pinyin Chinese input method is only present on devices sold in China